The chromosomes as thread like structures in nucleus was first described by
Mendel
Strasburger
Darwin
Levitzky
(b)E. strasburger $(1875)$ discovered these distinct structures during cell division.
The total number of nitrogenous bases in human genome is estimated to be about
The haploid condition is found in
Chromosome set in zygote is
Out of the two strands of $DNA$ one is carrying genetic information for transcription and it is called
Which of the following is the simplest amino acid
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